3 Minutes
Xiaomi expands its home-water safety lineup with the Mijia Pre-Filter Pro, a comprehensive whole-house filtration system designed to treat water before it enters your home plumbing. Available for pre-order in China on JD.com, the unit is priced at 799 yuan (roughly $111). This device positions itself as the first line of defense against sediment, rust, and other contaminants that can affect appliances and taps alike.
Key Features and Filtration Technology
40-Micron Filtration Membrane
The Pre-Filter Pro uses a 40-micron bionic fish-gill filtration membrane to trap sediment, rust, hair, paper scraps, algae, and even insect eggs before they reach faucets. Xiaomi asserts a retention rate of up to 98.6%, delivering cleaner water and protecting downstream appliances from clogging and scale buildup.
Whole-House Coverage and Flow
Designed as a first line of defense for the entire home, the system supports an 8T/h flow rate. That capacity is intended to sustain multiple outlets—kitchen sinks, showers, and laundry—without noticeable pressure drops. Xiaomi claims it can filter the water equivalent of about 8.9 barrels per minute, reducing the need for bottled water in households with heavy usage.
Durability and Environmental Tolerance
The Pre-Filter Pro features a copper-wrapped aluminum water channel to resist corrosion and prevent heavy-metal leaching. It is engineered to withstand extreme temperatures from -50°C to 80°C and pressure surges up to 20 bar, making it suitable for varied climates and installation environments.
Self-Cleaning Mechanism: Maintenance Made Easy
Automated Flush Cycles
The unit incorporates a water-powered self-cleaning system with scheduled flush cycles every 7, 15, or 30 days. The cleaning sequence begins with a 360-degree swirling backwash where the discs open, high-pressure jets spray in reverse, and the discs spin rapidly, leveraging centrifugal force to dislodge debris.
One Open, Two Turn, Three Scrub
Following the backwash, a strong direct rinse clears remaining particles. Xiaomi labels this cycle as “one open, two turn, three scrub,” a design intended to restore filtration performance automatically without manual intervention.
Power and Installation
To keep installation compact, the filter includes a built-in battery box, eliminating the need for an external backpack power source and simplifying placement near the main water line.
Performance Benchmarks and Use Cases
With an 8T/h flow capacity, the Pre-Filter Pro is suitable for homes with simultaneous demand at multiple outlets—think kitchen, bathroom showers, and laundry—without noticeable pressure loss. In practical terms, it reduces reliance on bottled water by handling substantial input volume at a fraction of the cost and footprint.
Market Relevance and Related Xiaomi Announcements
As part of Xiaomi’s broader push into smart-home water systems, the Mijia Pre-Filter Pro complements other devices in its ecosystem by providing a robust upstream filtration stage. In related news, Xiaomi recently unveiled an affordable hair dryer capable of rapid drying and a split air conditioner that combines air purification, quick cooling, and virus elimination features.
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